kaisling



W. KAISLING.

CALLING DEVICE. APPLICATION FILED 1UNE23, 1915.

1,360, 1 13. Patented Nov. 23, 1920,.

2 SHEETSSHEEI l.

l a? it 1/ HI I I 7 7 I 6 t 52 M il \EIZZRE CALLING I ll! Ill mm a W. KAISLING.

CALLING DEVICE.

APPLICATION FILED JUNE 23, 1915 1,360, 1 1 3. Patented Nov. 23, 1920.

Z SHEETSSHEEI 2.

UNITED STATES Parser osrice.

WILLIAM KAISLING, on crucaeo, ILLiivoIs, ASSIGNOR T0 KELLOGG SWITCHBOARD am) surrLY COMPANY, or CHICAGO, ILLINOIS, A conroRATIoN or ILLINOIS CALLING DEVICE.

Application filed June 23, 1915.

T 0 all whom it may concern:

Be it known that I, WILLIAM KAIS ING, a citizen of the United States of America, residing in Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements m alling Devices, of which the following is a specification.

My invention relates to calling devices,

and has to do more particularly with calling devices such as are commonly used at telephone substations for controlling the automatic switches which are located. at the central office by directive impulses to extend the connection from a calling substation to a called substation through the agency of the said switches. My invention is preferably adapted to operate in conjunction with the so-called metallic or two-wire type automatic circuits in which the circuit of the line is interrupted a number of times determined by the adjustment of the calling device.

One of the features of my invention is the provision of an improved governing device and the novel method in which the governor device is connected with the power driving mechanism of the calling device. Another feature of my invention is the manner in which the impulse springs are controlled by the said driving mechanism of the calling device.

It has been found from practice that a calling device of simple construction and one that does not readily get out of order is most desirable, and to this end I further direct my invention by producing an improved device' of the class described which will obviate the objectionable features heretofore found in calling devices and embody desirable features and advantages all in a simple, efficient and economical manner, and to the accomplishment of this object and such others as may hereinafter appear the invention consists in the novel details of construction, parts and combination of parts hereinafter described, and particularly pointed out in the appended claims,

reference being had to the accompanying.

drawings in which 1 illustrate the calling device in the different views, and in which views like reference characters indicate like parts, and in which Figure 1 is a face view of the calling device;

Fig. 2 is a rear view of Fig. 1;

Specification of Letters Patent.

Patented Nov. 23, 1920.

Serial No. 35,752.

li g. 3 is a right end view of Fig. 2;

erg. 4 s a top View of Fig. 2;

L l 'ig. 5 1s a bottom view of Fig. 2 with certa nparts cut away;

l1 1g. 6 1s a sectional view along the line c e of Fig. 5;

M 1g. is a sectional view along the line of lj ig. 2;

P n 1g. 8 IS a face view of the device with the anger hold connecting member removed;

Big. 9 Isa skeleton perspective view of the governor mechanism; v

F 1g. 10 is a perspective view of the spoolshaped member which holds the parts of the goyernor;

F1g. 11 1s a perspective view of the weighted member of the governor;

Fig. 12 is a perspective view of the impulse springs;

F 1g. 13 illustrates diagrammatically a well-known substation telephone circuit with the calling device of my invention connected in circuit.

Referring now more in detail to my invention as illustrated, it comprises a main mounting plate 1, having a flanged portion 2 and a forwardly extending cup-shaped portion A main shaft 4i extends concentrically through the bearing of the main mounting plate 1, and has a finger-hold actuating member 5 fastened to it in any suitable manner, it being preferably staked at its forward end to the said shaft 4. The fingerhold actuating member 5 is provided with a plurality of openings or finger-holds 6, preferably 10 in number and the number indicating disk 7 is placed with its indicating numerals below the actuating member 5 and resting upon the flange 2, the said numerals corresponding with the finger-holds 6. The indicating disk 7 has a protective disk 8 of transparent material such as glass placed in front of it so as to protect the said indicating disk. The members 7 and 8 are clamped to the flanged portion 2 by means of a tripod clamping member 9 which is fastened in position upon the cup-shaped portion 3 of the mounting plate 1 by means of the screws 10.

The ten openings which form the fingerholds 6 are numbered 1, 2, 3, etc., to 0. The

calling device is adapted to transmit from I to send through the agency of the impulse springs. 1 also provide a casing 11 for inciosing the forward portion of the device, the said casing being fastened to the flanged portion 2 of the mounting plate 1 by means of the screws 12. i

The actuating member 5 is provided with a card 16 and a transparent protectin dish 17, the said card 16 and protectivedmk 17' being held in place by means of a clamping ring 18 which is fastened to the actuatingmember 5 in any suitable manner, as bythe screw s19 which have screw-threaded 1 e11- gagement with the member 5. if stationary fingerv stop 13 .is mounted upon the flanged portion of the casing 11 vby means of the screws 12. W hen the actuating member 5 is advanced in a clock-wise direction the advancing finger of the operator engages the stop 13 and. arrests the movement of the actuating member Apin 14 is staked to the stop 13 and extends throughthe casing 11. Avpin 15 isprovided which is staked to the member5 and when the member 5.is at normal the pin 15 rests against: the pin 14 .so .thatiwhen the member 5,is advanced in a clock-wise direction, the pin 15 moves with the member 5 and the member 5 in being released restores in a counter-clockwise direction and. its .return movement is arrested by thepin 15 engaging the stationary pin 14. The two. pins 14 and 15 are used as a stop to hold the motor spring under proper tension, which will be more fullydescribe" in anotherpart of this specification.

leferring now more particularly to th operating mechanism, the main shaft 4 e:- tends through a spring barrel 20, which incloses a motor. spring 21, the said spring being secured at its inner end to a hooked formed pin 22 upon the shaft 4,- and the outer end of the spring 21 is secured to a pin 23, the said pin being astened to the inner wall of the spring barrel-2t). The spring barrel 20 is a flanged cup-shaped member and is set in the opening 25 of the plate 1 and is fastenedv to the plate 1 in any suitable-manner, but 1 preferably hold it in place by swaging it into the opening of tho'plate. The actuating member 5 which is staked to the shaft 4, fits closely against the barrel 20 forming a cover for thesame. To allow the proper tension to be given to the motor spring 21, the actuating member 5 is revolved in a clo k-wise direction until the motor spring is under proper tension. The stop 13 is then mounted upon the flanged portion 2 with its staked pin 14 projecting through the casing 11, the pin 15 which is staked to the member 5 engaging the said pin 14, thus holding the motor spring 21 under proper tension.

Positioned next to the spring barrel 20 along the shaft 4 is the gear wheel 26 loosely mounted upon the said sh'aft. A ratchet wheel 2? 18 positioned next to the gear wheel 9.6, thesaid ratchet 27 being rigidly fastened gear wheel '31'is rotatably supported at its.

opposite ends to the plate 1 and "to bridge plate 32, the said bridge plate, being-secured to the studs 36, 8'7" and 38, by means ofthe screws 39; The said studs are staked to the plate 1 thus securelyholding the plate 32 upon the main mounting plate 1. The gear31 has a pinion 33staied to it in any suitablo'manner, and this pinion 3 -5 meshes with the gear 26. The gear wheel 31 meshes with a pinion 34 which is integral withthe shaft 35 of the governor mechanism G, which is adapted toretard the return movement of the finger hold actuating member 5 to a predetermined speed.

The governor mechanism G main shaft 35 which ,is rotatably supported at its opposite ends in the plate 1 and the bridge plate 32; A'- pinion 34 is cut-upon the shaft and is shown in mesh with the gear 31. r'spool shaped member holds the governor mechanism which controls the speed :of the calling device in its return nent. The governor comprises a red member 41, semi-circular in shape, pivotally mounted between the two sp [cl heads 42 and 43'by means of a pivoted pin 44. A coiled spring 45 is positioned upon he pin 44, one of its free enos bearing against the weighted member 41, and the other free end of the spring bearing against an adjustment pin 46. T his adjustment pin 46 in conjunction with the spring 45 regu- 1 speed at which the governormziy lates tne be driven and therefore of course the speed at which the calling device transmits the im pulses. The adjustment pin 46 has a slotted head 47 so that the pin may be turned and is inserted into the openings .48'and 4.9.of the spool heads of the member 40. The pin 46 also has a shoulder 50 which forms'a;

bearing surface while the pin is being adjusted to regulate the speed of the governor. The end 51 of the pin 46 is slotted and spread so that when the pin is in place and in a certain adjustment, it willstay soadiusted due to the frictional engagement with the opening 49. A' portion of the body of the pin is eccentrically disposed, forming the eccentric portion 52 andone end of the spring 45 rests upon this part of the pin. A piece of fiber 53, or other suitable, material, is securely held in the weighted memcomprises a V tension of the spring 45.

her 41 in close proximity to the fulcrum of the weight. The member 40 and the several parts above described as a Whole is slipped over the shaft 35 and into a cup- ;shaped member 54, which is rigidly secured to the bridge plate 82 in any suitable manner and forms a containing member for the said governor mechanism G. The member 40 is held in position with its several parts .upon the shaft 35 by means of the set screw 55.

The governor mechanism G is operatively associated with the train of gearing comprising the gears 26 and 31, and pinions 33 and 34. Now when the member 5 is operated in a clock-wise direction to set the calling device to transmit a certain number of impulses, the gear 26 being loosely mounted upon the shaft permits the movement of the shaft and ratchet also in a clock-wise dito the shaft 35, causes the member 41 to be forced out by centrifugal force against the The piece of fiber 53 upon the member 41 is forced against the inside periphery of the cup 54, and as the said fiber is held in close proximity to the fulcrum of the weighted member 41, the weight of the member 41 is multiplied in assisting the fiber 58 to remain in frictional engagement with the inside periphery of the cup 54 against the tension of the spring 45, thus permitting the device in its return :movement to restore at a predetermined speed. In practice, it has been found that a group of impulses, ten in number, may be sent in a space from three fourths to one and one half seconds of time, and to permit the calling device to operate within these limits, I provide adjustable means for the governor in the form previously described. Now should it be desired that the device run at a speed so as to transmit ten impulses in say one and one-half seconds, the adjustable pin is turned until the eccentric 52 is at its lowest point so that the end of the spring 45 rests upon this lowest point of the eccentric and in this position the spring 45 is under the least tension so that upon the return movement of the device the weighted member 41 is more easily acted upon by centrifugal force causing the fiber to be held firmly in frictional engagement against the inside of the periphery of the cup 54. Now

when the device is to be speeded up, the adjusting screw may be turned causing the spring end of the spring 45 to ride upon the eccentric until the eccentric is at its highest point, and in this position of the eccentric causes the tension of the spring 45 to be increased. The resultant force acting upon the member 41 is decreased due to the increased tension of the spring 45, so that the frictional engagement of the fiber 53 and the inside periphery of the cup 54 is not as great as in the former case, thus permitting the speed of the return movement to be increased and also permit a much shorter period for each impulse.

The gear 26, ratchet 27 and pawl 29 are so related that when the member 5 is moved slowly in a clock-wise direction the pawl 29 remains in engagement with a tooth of the ratchet 27 due to the tension of the spring 30, so that movement is transmitted the teeth of the ratchet 27 and the gear be ing loose upon the shaft 4 remains stationary and no movement is transmitted to the governor mechanism G. I provide this arrangement as ordinarily the member 5 is rapidly rotated in a clock-wise direction by an operator in sending a series of impulses and if this escapement were not provided'the governor would tend to retard the forward movement of the dial to a slight extent, but with this escapement provided I allow the rapid movement in a clock-wise direction of the member 5 without operating the governor mechanism.

In order to operate the impulse springs of the device, I preferably provide an actuating ratchet 56 insulatingly mounted upon the main shaft 4 and having a plurality of teeth, 12 in number. I use only ten of these teeth as I only have the finger-holds numbered l to 10, having a space equal to two finger holds upon the member 5 and the stop 13 is so locarexl that when. impulses are being sent a slightly greater movement than that required to operate the impulse springs a number of times depending upon the number of impulses to be sent is given to the member 5, this being so arranged that the positive action is obtained 0 that the full numberof impulses are alu a s transmitted.

Impulse contac are provided which are interrupted according to the number of impulses to be transmitted, therefore I provide a pair of normally closed contacts. One of the contacts is in the form of an adjustable contact screw 60, which has screw-threaded engagement with a lug 61 which is integral with the L-shaped member 62, this member 62 being insulatingly mounted upon the plate 32 and heldin place by'the insulated '3. con ct of the impulse springs is i in of a'spring- G5 which is insulatingr mounted uponthe-bridge-plate 32 by: me of theinsulated 'screws 66 and the clamping plate; A screw 68 hasscrewthreat enr en with the plate 67 and' c t: I terms a terminal ot the contact' 65; so ar rangetheimpulsecontacts th t'the duration of interruption and contact otl tlie':impr1lse contaotstflyfiii; may varied and to this end-I provide illE lttljMShfiblG contact be docreuset. A pawl Gil-and the spring;

are operatively associated with each other endure connected so as tO-fOl'lTr a hinged point a? z A spiral spring 71 holds the pawl and s; in hing '5. relation, the said 71 having one end fastened to hook mum-rich is pie.- erably integrar with the spring-:65. The other end of the spring 71 is fastened to a hook 73, which is integral 10 with the-pawl 69,-thespring 71 holding the niwl'ztil ag t l which 'heteeth' of the ratcnct 56 is in zla'tingly mounted upon the Now it the actuating member 5 is 1 n a clock-wise direction the pawl 33 the teeth of the ratchet 56. but 11in movement. the of the pr es a tootlroi the rat l nd the spring 65 is drawntorward again? normal tension thus opening the nor iai contacts 60 65, and due to the restoring power of the motor spring 21', the nose oi? the pawl (3t) tor-cod upon the tooth of the ratcnet it was engaging againstthe tension of the spring '71, and when the nose of the pawl p: the teeth last engaged, due to the return movement of the shaft 4% the spring '71 draws the pawl into the next tootheddcpression of the ratchet to again close the contacts, the said contacts opening and closing according to the number 01 impulses that a e being sent.

I also provide a pair of shunt springs 75 and 76 by which the subscribers apparatus ort-cii riansnitred.

. ting The shunt spring upon the plat 32- s and the forming the 1 The shunt 's insuraringly mo ited upon the l .late 32 by means of the insulated screws 78 and the clamping plate '79, the screw 80 having screw-threaded engagement with the plate 7 9 forming a terminal for the spring 7 6. An'operating stud 81 of insulathe L-shaped member 62 the adjustable contact when moved toward theiutex'l while the impulses ing material is provided to operate the shunt springs and is positionedupon the shaft 4 nezrttothe ratchet 56', the said "stud 81 and the ratchet '56 being: held in position upon oneendot the shaft 1, by means of a washer endotthe spring T6 allowing the contacts 75, 76* to engage, the contacts remaining'in engagement "until the member'81returns to normal. The lugs 86 the dial to an instrument. In Fig. 13, l have illustrated a well-known substation with a calling deviceofmyinvention connected in circuit. I have used like reference characters for indicatingthe parts which are tliesanie as inthe rest or the drawings, so that the cooperation of the impulse and shunt springswill be easily understood.

lwill' now describe briefly the operation ot the device. Letus assume that the op erator-wishes to effect four operations-of the impulse contactsGO, 65, that is to transmit tour impulses,' the finger of the operator will be inserted into the finger-hold 6 abovethe number and the member is rotated in a .-wise direction until the finger of the or engages the stationary stop 13. 's in, rotation of the member 5 also causes the ion of the-main shaftd and also the ran-hot 27 and as the driving gear 26 is upon the shaft 1 and as pawl 29 is mounted upon the gear 26, the ratchet in its rotation allows the said pawl to pass overthe teeth of the ratchet.

pulse springfio also passes over the teeth of the impulse ratchet 56 but not affecting the impulse springs at this time. As the main shaft 4. leaves normal the stud 81 carricd thereby disengages the projection of the shunt spring 76allowing the said spring to engage the shunt spring-'75 to closethe said springs to short circuit the substation train of gearing, thus allowing'the restoration of the device at a predetermined speed. Upon the returnmovement oi the shaft, the ratchet 56 affects the pawl 69' as previously uponthe bridge plate 32 are PI'OVlClGChlJO term means tori astening The pawl 69 which is operatlvely assoclated wltlrthe im- 7 described to cause the contacts 60, 6:5 to be interrupted four times to transmit the proper number of impulses. Upon this turn to normal of the device the stud 81 again engages the'projection of spring 76 again interruptin shunt springs 75, 76. The device is now at normal and is again ready to be adjusted to effect the transmision of another set of impulses.

In illustrating my invention, I have shown it operating with a certain form of sub station, but I do not wish to be limited to this as the device of my invention is adapted for other uses. I also do not wish to be limited to the exact structure as shown many modifications and changes may readily suggest themselves, but I aim to cover all such changes as come within the spirit and scope of the appended claims.

Having described my invention, what I desire to secure by United States Letters Patent, is:

'l. A. calling device comprising a mounting frame, impulse mechanism supported by a bridge-plate mounted upon the rear of said frame, a circular cup-shaped member secured to said frame and extending for ward past the face of said frame, and a rotatable finger-hold setting member operatively connected to said impulse mechanism and lying within the said cup-shaped member.

2. A calling device comprising an integral cup-shaped mounting frame, impulse mechanism supported by said frame and positioned partially within the cup portion of the frame, a flanged cup-shaped shell secured to said frame and extending forward past the external face of the cup portion of the frame, and a rotatable finger-hold setting member lying adjacent to the external face of said cup portion and positioned within the said cup-shaped shell member.

3. A. calling device comprising an integral cup-shaped flanged mounting frame, impulse mechanism supported by the frame and positioned partially within the cup por tion of the frame, a rotatable finger-hold setting member positioned at the external face of the cup portion and connected to said impulse mechanism, and a circular member attached to said mounting frame extending around the outer perimeter of the said setting member.

4;. calling device comprising impulse transmitting mechanism, a setting member for controlling the said impulse mechanism, a toothed impulse wheel directly connected to the said setting member, an impulse spring carrying a pawl for engaging the said impulse wheel, the said pawl being normally in engagement with said impulse wheel and adapted to operate said impulse spring a number of times corresponding to the adjustment of the setting member upon the return movement of the setting member to normal. said pawl being ineffective to operate said impulse spring upon the setting operation of the setting member.

5. -r calling device comprising an impulse mending mechanism, a rotatable dial for coni'Olll said mechanism, a toothed impulse wheel connected to said dial, a pair of con act points adapted to be opened and closed onsive to the operation of said dial, and a on ch member pivoted to one of said contacts and operatively associated with said impulse wheel for performing such opening and closing of said contacts upon the return movement only of said rotatable dial.

6. A. signaling device comprising impulse mechanism, a rotatable finger-hold device for controlling said impulse mechanism, a pair of contacts adapted to be opened and closed responsive to return operations only of said finger-hold device, one of said contacts being operatively connected to the linger-hole device through the medium of a pivoted catch member and the other of said contacts comprising an adjustable screw threaded member adapted to control the relation between said contact points.

'7. A calling device comprising an impulse mechanism including an impulse wheel, a-

.etting member for controlling the impulse transmitting mechanism, a pair of contacts controlled by the said setting member, one of said contacts comprising a spring member provided with a pivoted ratchet pawl associated with said setting member, the other of said contacts comprising an adjustable screw-threaded member and a coiled spring for maintaining said ratchet pawl in its position in relation to said impulse wheel.

8. A calling device including impulse transmitting mechanism, a setting member for controlling said mechanism, a serrated member connected to said setting member and adapted to rotate forward and backward, and a pair of contacts controllable by d setting member, one of said contacts including a pivoted catch member normally in engagement with said serrated member and adapted to be effectively operated only upon the backward rotation of said serrated member to open and close said pair of contacts.

9. A calling device including impulse transmitting mechanism, a setting member for controlling said mechanism, a serrated member connected to said setting member and adapted to rotate forward and backward, and a pair of contacts controllable by said setting member, one of said contacts bein; provided with a catch member adapted to be ineifectively moved upon the forward rotation of said serrated member, but adapted to be effectively moved upon the backward rotation of said'serrated member, a number of times, corresponding to the numher of teeth of saidserrated-member:that contacts with the said catch member to open and close said contacts.

10. A calling dcvice including a m0unting' plate, impulseitransmitting mechanism secured to said' lnountin-g plate, a setting member for controlling said-impulse transmitting mechanism, a cylindrical-member provided with a flange attached: to the rear of said mounting plate and extending for- Ward flush with the face of said setting member whereby said setting member is pro- I tected against injury.

11. A device of the character described including a mounting plate, impulse transmitting mechanism secured to said mounting plate, a circular setting member connected to face :of said circular'settingmember,- a series of finger holds forsard setting membenand -a "finger stop extending upward adjacent saidcylindr ical member'and across infront of said finger holds.

\ Signed by me at Chicago, county of Cook and State cf Illinois, in the presence of two Witnesses.

WILLIAM YAISLING.

Witnesses G150. A. YANOOHOWSKI,

'VVM. BERGHAHN. 

